By John Jeffrey Hester; et al
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Extra resources for 21st century astronomy
13 Because mathematics helps us identify and analyze patterns in nature, it has become the language of science. from now? A month from now? A year from now? Most of us probably lead an indoor and in-town existence, removed from an everyday awareness of the patterns in the sky. Away from the smog and glare of our cities, however, the patterns and rhythms of the sky are as easy to see today as they were in ancient times. 12) and the planting and harvesting of the crops.
To reach the nearest large galaxies beyond our own takes a few million years—the amount of time that has passed since our australopithecine 5 ancestors were on the scene. 7 billion years—the age of the universe, or about three times the age of Earth. Look at that comparison again. The size of Earth is to the vast expanse of the universe as a single snap of your ﬁngers is to three times the amount of time that has passed since the Sun and Earth were formed! That’s something to ponder the next time you look up at a star-ﬁlled summer sky.
7 The Tevatron high-energy particle collider at Fermilab provides clues about the physical environment during the birth of the universe. Laboratory astrophysics, in which astronomers model important physical processes under controlled conditions, has become an important part of astronomy. 3 Science Is a Way of Viewing the World Given the visible importance of technology in our lives, you might be tempted to say that science is technology. It is true that science forms the basis of technology through a mutually supportive relationship in which each enables advances in the other.
21st century astronomy by John Jeffrey Hester; et al